Improvement in ox-bow pins



UNITED STATES PATENT @F IcE.

ERASTUS S. WQODFORD, OF WINCHESTER, CONNECTICUT.

IMPROVEMENT IN OX-BOW PINS.

Specification forming part of Letters Patent No. 52,923, dated February27, 1866.

i To all whom it may concern.-

Be it known that I, ERAS'JJUS S. WOODFORD, of Winchester, Litchfieldcounty, and State of Connecticut, have invented a new and ImprovedOx-Yoke Bow-Pin; and I do hereby declare that the following is a fulland exact description thereof, reference being had to the accompanyingdrawing, and to the letters of reference marked thereon.

The nature of myinventionconsists in making a self-acting self-lockingbow-pin.

A bed-plate of metal is made, with a groove in its longitudinal centerfor the pin to move back and forth, with a hole through one end, throughwhich the bow passes when pushed through the bow-hole into the yoke, theplate being screwed onto the yoke. Into the bedplate groove is fittedthe pin. A cap-piece is fitted over the pin to keep itin its place. Theend of the pin is cut angular, so that the end of the bow (being roundedor pointed) when it is pushed into the bow-hole unlocks and forces thepin back until the bow is pushed up to the hole for the pin, when thepin is pushed into the pin-hole by a spiral spring around the pin.Another spiral spring around the pin turns the pin as it enters thepin-hole in the bow, lifting the shoulder of the thumb-piece into a slotin the cap of the bolt-plate, securely locking the pin into the ox-bow.

When the bow is to be removed from the yoke a pressure downward upon thethumbpiece of the pinunlocks it, when it is easily poses specified.

slid out of its position in the hole of the oxbow.

To enable others skilled in the art to make and use my invention, 1 willproceed to describe its construction and operation.

A bed-piece is made to be screwed to the upper surface of the yoke, witha longitudinal groove for the pin, anda hole in one end to fit thebow-hole in the yoke. A thumb-piece is'attached to the bolt, and a slotin the side of the bed-piece and cap to allow it to move back and forth.Two spiral springs are wound on the bolt-one to force it into thepin-hole of the bow, the other to lock the pin into the how. The end ofthe-pin is cut angular, so as to be unlocked'and pushed back by theentrance of the bow into the bow-hole.

A is a full View of the bow-pin. B is the bed-plate. U is the bolt orbow-pin. D is the cap. No.1 is a spiral spring on the pin, which forcesit into the hole in the ox-bow. No. 2is a spiral spring 011 the pin,which turns the pin, thereby locking it into the bow.

\Vhat I claim as my invention, and desire to secure by Letters Patent.is-

The combination of the bed-plate B,the pin 0, springs 1 and 2, and thecap D, as and so as to operate in the manner and for the pur- ERASTUS S.WOODFORD. Witnesses:

J. A. MOORE, W. KIRK.

